Heating and vaporizing auxiliary for furnaces



Aug. 19, 1924. 1,505,224

H. H. SOUTHWORTH HEATING AND VAPORIZING AUXILIARY FOR FURNACES Filed Feb. 23 1924 Patented Aug. 19, 1924.

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PATENT nnnmson SQUTHWOBTH, or; EVANSTON, ILLINOIS;

HEATING AND V APOBIZING AUXILIARY FOR FURNACES.

Application filed-February 23,1924. Serial No. 694,562.

To aZZ whom it may concern:

Be it known that I, HARRISON H. SOUTH- wonrrr, a citizen of the United States, and

a resident of Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Heating and Vaporizing Auxiliaries for Furnaces; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to a combination in construction, which may be manufacturedand assembled at small cost, and which may readily and easily be installed in connection with any furnace, either at the time or after the furnace itself has'been placed andconnected to the radiating system.

The several advantagesof the invention will appear more fully as I proceed with my specification.

In the drawings:

Figure 1 is a view representing a vertical central section of the novel heating and vaporizing furnace auxiliary installed in position between a furnace and the stack or chimney.

Figure 2 is a View representing a vertical section, in a plane indicated by the line 22, of Figure 1. p

Figure 3 is a horizontal section, in a plane indicated by the line 3-3 of Figure 1.

Referring now to that embodiment of the invention illustrated in the drawings: 10 indicates a furnace of any familiar construction, as a hot water or steam heat furnace; 11 indicates the chimney or -stack; 12 indi cates the pipe leading the products of combustion from the furnace to the stack; and 13 indicates the novel heating and vaporizing furnace auxiliary interposed between the furnace and the stack and connected on opposite sides to lengths of the pipe 12, so that the products ofcombustion will be directed through the furnace auxiliary on their way from the furnace to the stack; 1 t

The furnace auxiliary 13 is constructed to provide a hollow header 14; ahollow base 15; vertical flues, arranged in pairs, in this case a single pairof flues, 16, '17 connecting the header 1 1 and the base 15 and providing in connection with the hollow base a vertical return bend; a bypass member'32 located in i the header between: the planes of the iiues; and adapted for deflecting the products of combustion through either the pair of fiues and thevertical return bend or directly through the header; an open top water pan 18 through which the fines 16 and 17 extend, with their bottom ends secured in suitable openings in the bottom wall 18 'of the water pan so that the vertical return bend above referred to is formed in part by the said bottom wall 18 of the pan; a jacket drum 19 enclosing the space about the flues 16 and 17 above the water pan 18; a cold air register conduit 20 opening into the jacket drum 19 in the neighborhood of the water pan 18';'and'a warm air registerconduit 21 leading from the top of the jacket drum. 20*" indicates the cold air register and 21 the warm air register, each located in a floor above the furnace and connected to its respective conduit.

The entire device except the water pan 18 is made of thin sheet metal and may be made in any form best suited to the space in which it is to be located. The-pan is preferably made of heaviermetal, as cast iron or steel, The device as shown ismade rectangular in cross-section and is wider in direction parallel to the/plane of the flues 16, 17 and of thefurnace pipe 12. The header 14 consists of an elongated rectangular shell 22 with side walls'22 22 and aperturedend walls 22 22* in which are engaged the proximate ends of the lengths of the furnace pipe 12.

Said shell is closedbyatop wall 22 at tached thereto in any convenient way as by a down-turned flange 22. The bottom wall of the header is provided by a flat metal sheet 23 which ismade somewhatgreater in length header 14 with its axis pin 32 journaled-v The flues 16, 17 are ordinary sheet metal pipes. Their upper ends open through suitable holes in the metal sheet 28, in which holes they are secured in any well-known convenient manner. As already mentioned, the bottom ends of said flue pipes 16, 17 are secured in suitable holes in the bottom wall 18 of the water pan 18.

The jacket drum 19 is a rectangular sheet metal shell having side walls 19, 19 and end walls 19 19 which preferably extend from the sheet wall 28 of the header 1% to the basement floor or other foundation on which the base ofthe device rests. Said walls 19 and 19 are attached by a bead 25 to the bead 24 on the header and a bead 26 formed towards the bottom of said walls provides a support for an outwardly turned flange 18 at the top of the water pan 18. The parts of the Walls 19219 of the drum,

which are below the bottom of the pan 18,

constitute the side and end walls of the hollow base 15. The base 15 is closed at the bottom either by the basement floor 27 or if; desired, a sheet metal bottom wall 27 may be provided, as indicated bydotted lines, 7

Water for vaporizing purposes is sup-- plied to the pan 18 by means of a water pipe 28 led into the device through one of its vertical Walls 19*. A float 29 and water cook, 30 operated thereby controls the supply of water to the .pan and maintains the water at a predetermined level in the pan.-

Thecold air conduit 20 opens into the jacket drum 19 through a suitable hole in its side wall 19 said hole being located just above the pan l8 and preferably directly opposite the said float and watercock, so that it permits ready access for adjustment of those parts, when the end of theconduit is withdrawn. The warm air conduit 21 opens into the jacket drum 19 through a hole 81 in its other side wall 19 immediately below the sheet metal bot tom wall 23 of the header 14.

The by-pass member 32 is located in the in the side walls 22 of the header in a plane extending transversely of the header between the flues 16 and 17. A handle, 32" provides for the control or" the by-pass member from the outside so that it may be closed, as indicated in full lines, to shut off the direct passage from the furnace to the stack and thus deflect the products of com bustion through the pair of flue pipes 16, 17 and the vertical return bend connecting said pipes, or may be opened as indicated in dotted lines, to open a direct passageway through the header to permit a direct flow from the furnace to the stack. When the products of combustion from the furnace are compelled to follow the path indicated by the arrowsdown the flue 16 through the Water in the pan 18; about the return vertical bend connecting the bottom ends of the tines .16 and 17 and in contact with the bottom Wall 18 of the water pan; thence up the flue 1? through the water in the pan 18; and thence through the header i i to the pipe 12 and stack 11.

The operation of the device will be manifest from the foregoin description. When the furnace is first started or freshly fired,

the by-pass member is opened, so that the requisite draft may be provided until i the lire is brought to proper burnin The member 32 is then closed. As is well known, when a furnace is burning under normal conditions, an enormous amount of heat is car ried off with the products of combustion.

This heat, carried by said products of come bustion along the path above described heats the flue pipes 16 and 17 and the return ver-.

tical bend connecting said flue pipes, the top wall of which bend is the bottom wall l8 of the steel water pan. The heat from p the pipes 16 and 17, where they pass through the water in the said pan, and the heat from the said bottom wall of the pan, vaporizes' the water in the pan 111 large. quant1tiesit the same time the cold air from the cold register, coming into the bottom of the drum 19 above the pan, is warmed by contact with the hot flue pipes and with the warm vapor, with which it becomesv heavily laden. Thereafter it rises in the drum in contact with the hot flue pipes, as indicated by the arrows in Figure 2, and then passes out through the warm air conduit and through the warm air register 21 The novel furnace auxiliary thus not only supplements the heating power of the fury nace by supplying warm air through the register 21 produced by heat that is otherwise lost, but it also provides in a highly efliecient manner a large amount of moisture necting the bottom ends of said flue pipes below said pan, one part of said means being the bottom wall of said pan, a jacket enclosing said flue pipes and pan, a cold air conduit leading into said jacket in the neighborhood ofsaid pan, and a warm air conduit leading from said jacket at a pointabove said tank.

2. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, flue pipes, one leading from and one returning to said header, an open top water. pan

through which said flue pipes extend, means connectlngsald flue pipes at their ends 'bexfurnaces, comprising ahollowheader, flue.

yond the pan, said means being open onone side adjacent said pan, a jacket enclosing said fines and pan, a cold air conduit and a warm air conduit respectively connected to said jacket at points near and remote from said pan.

3. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, a hollow base spaced below said header, a jacket enclosing the space between said header and base, an open top pan having a bottom wall which provides a top wall for said hollow base, laterally spaced flue pipes connecting said header and base, said flue pipes extending through said pan and opening through the bottom wall thereof, and warm and cold air conduits respectively connected to said jacket.

l. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, vertical flue pipes, one leading from and one returning to said header, an open top water tank through which said flue pipes extend, means providing a vertical return bend connecting the bottom ends of said flue pipes below said pan, one part of said means being the bottom wall of said pan, a jacket enclosing said flue pipes and pan, float controlled means for maintaining a predeten mined water lever in said pan, a cold air conduit leading into said jacket in the neighborhood of said pan, and a warm air conduit leading from said jacket at a point near said header.

5. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, flue pipes, one leading from and one returning to said header, an open top water pan through which said flue pipes extend, means connecting said flue pipes at their ends beyond the pan, said means being open on one side adjacent the pan, a acket enclosing said flues and pan, means for supplying water to said pan and for maintaining a constant predetermined level of water in said pan, and cold and warm air conduits respectively connected to said jacket at points near and remote from said pan.

6. A heating and vaporizingauxiliary for furnaces, comprising a hollow header, a hollow base, spaced below said header, a jacket enclosing the space between said header and base, an open top pan having a bottom wall which provides a topwall for said base, laterally spaced flue pipes connecting said header and base, said flue pipes extending through said pan and opening through the bottom wall thereof into said base, means for supplying water at a constant predetermined level in said pan, a warm air conduit leading from said jacket at a point near said header, and a cold air conduit opening into said jacket at a point near the topoflsaidw pan.v I

7 A'heating and VZLPOI'lZHIg' auxiliaryfor pipes, one .leadingfrom and one returning to said-header, an open: top water pan into which said flue pipes extend, means con-,

necting said flue ,pipesat theirendsin the,

neighborhood of the pan, saidmeans being,

adapted in part to contact with the contents of said pan, a jacket enclosing said flue pipes and pan, and a cold air conduit and a warm air conduit respectively connected to said jacket at points near and remote from said pan.

8. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, vertical flue pipes, one leading from and one returning to said header, an open top water pan through which said flue pipes extend, means providing a vertical return bend connecting the bottom ends of said flue pipes below said pan, one part of said means being the bottom wall of said pan, a controllable by-pass member located in said header between said flue pipes adapted for deflecting the products of combustion through said flue pipes and return bend or directly through said header, and a jacket enclosingv said flue pipes and pan.

9. A heating and vaporizing auxiliary for furnaces, comprisin a hollow header, fluepipes, one leading rom and one returning to said header, an open top water pan through which said flue pipes extend, means connecting said flue pipes at their ends beyond the pan, said means being open on one side adjacentsaid pan, a controllable bypass member located in said header between said flue pipes adapted for deflectin the products of combustion through sai flue pipes and the said means connecting their ends or directly through said header, and a jacket enclosing said flues and pan.

10. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, flue pipes, one leading from and one returning to said header, an open top water pan into which said flue pipes extend, means connecting said flue pipes at their ends in the neighborhood of the tank, said means being adapted in part to contact with the contents of said pan, a controllable by-pass member located in said header between said flue pipes adapted for deflectingthe products of combustion through said flue pipes and said means connecting their ends or directly through said header, and a jacket enclosing said flue pipes and pan.

11. A heating and vaporizing auxiliary for furnaces, comprising a hollow header, a hollow base spaced from said header, a acket enclosing the space between said header and base, an open top pan having a bottom wall which provides a top wall for said hollow base, laterally spaced flue pipes connecting V the bottom Wall thereof, and a controllable by-pass member located in said header between said flue pipes adapted for deflecting the products of combustion through said flue pipes and hollow base or directly through said header.

In testimony that I claim the foregoing 10 as my invention, I affix my signature in the presence of two witnesses, this 19th day of February, A. D. 192%.

HARRISON H. SOUTHWORTH.

Witnesses T. H. ALFREDS, JOHN P. MEHLHOPE. 

